Question: In linear regression, if the correlation coefficient between the response variable y and the explanatory variable x 1 is zero, then: there is no linear

In linear regression, if the correlation coefficient between the response variable y and the explanatory variablex1 is zero, then:

there is no linear relationship betweenx1 andy.
R^2 will be 1
the observed values ofyare equal to the predicted values.
The scatterplot ofx1 vs.ywill be a perfectly straight line
We reject Ho = B1 = 0

2. If the probability of rain in a given day is 0.7, what are the odds that it will rain that day? Report your answer to 2 decimal places

3.Investigators studying the effects of sodium deficiency in chickens observed that birds deprived of sodium showed an increase in spontaneous activity, partly measured by pecking activity. The number of bird pecks per bird was recorded for 17 eleven-week old chickens that were fed a low-sodium diet for 22 days, and 15 eleven-week old chickens that were fed a standard ration for 22 days. What is the most suitable parametric procedure for this data to find the p-value?

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